Auto merge of #81350 - tmiasko:instrument-debug, r=lcnr

Reduce log level used by tracing instrumentation from info to debug

Restore log level to debug to avoid make info log level overly verbose (the uses of instrument attribute modified there, were for the most part a replacement for `debug!`;  one use was novel).

compiler/rustc_mir/src/transform/check_consts/validation.rs

@@ -812,7 +812,7 @@ impl Visitor<'tcx> for Validator<'mir, 'tcx> {
         }
     }
 
-    #[instrument(skip(self))]
+    #[instrument(level = "debug", skip(self))]
     fn visit_terminator(&mut self, terminator: &Terminator<'tcx>, location: Location) {
         use rustc_target::spec::abi::Abi::RustIntrinsic;